/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Controller;

import DAL.OrdersDAL;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.apache.avalon.framework.logger.ConsoleLogger;
import org.apache.fop.apps.FOPException;
import org.apache.fop.messaging.MessageHandler;
import org.xml.sax.InputSource;

/**
 *
 * @author kenisk
 */
public class ConvertPDFServer extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            String id = request.getParameter("id");
            String realpath = getServletContext().getRealPath("/");
            String xslpath = realpath + "PDF\\PDF_FO.xsl";
            OrdersDAL orderDAL = new OrdersDAL();
            String xmlSource = orderDAL.getPFD(Integer.parseInt(id));
            //end get srouce
            StreamSource xslFile = new StreamSource(xslpath);
            //create inputstream
            InputStream xmlIS = new ByteArrayInputStream(xmlSource.getBytes("UTF-8"));
            StreamSource xmlFile = new StreamSource(xmlIS);
            TransformerFactory factory = TransformerFactory.newInstance();
            Transformer trans = factory.newTransformer(xslFile);
            OutputStream outs = new ByteArrayOutputStream();
            StreamResult result = new StreamResult(outs);
            trans.transform(xmlFile, result);
            InputStream is = new ByteArrayInputStream(((ByteArrayOutputStream) outs).toByteArray());
            ByteArrayOutputStream outstream = new ByteArrayOutputStream();
            org.apache.fop.apps.Driver driver = new org.apache.fop.apps.Driver(new InputSource(is), outstream);
            ConsoleLogger logger = new ConsoleLogger(ConsoleLogger.LEVEL_INFO);
            driver.setLogger(logger);
            MessageHandler.setScreenLogger(logger);
            driver.setRenderer(org.apache.fop.apps.Driver.RENDER_PDF);
            driver.run();
            response.setContentType("application/pdf");
            byte[] content = outstream.toByteArray();
            response.setContentLength(content.length);
            response.getOutputStream().write(content);
            response.getOutputStream().flush();
        } catch (FOPException ex) {
            Logger.getLogger(ConvertPDFServer.class.getName()).log(Level.SEVERE, null, ex);
        } catch (TransformerException ex) {
            Logger.getLogger(ConvertPDFServer.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            // out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
